Brian D. Oostman, DO
Family Medicine Physician · Oswego, IL
Brian D. Oostman, DO is a family medicine physician with a practice address in Oswego, Illinois, and NPI 1316950496, issued on Aug 13, 2006. Check the license (Illinois 036-108507, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Brian D. Oostman
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 036-108507 IL
Self-reported in NPPES; status is on the state search - Practice location
- 80 Templeton Dr, Oswego, IL 60543
- Phone
- (630) 554-3456
- Enumerated
- Aug 13, 2006
- Record last updated
- Nov 18, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 036108507 IL
- Medicare enrollment
- Enrolled (PECOS I20100614000683); accepts Medicare assignment
- Medical or professional school
- Midwestern University, Chicago College Of Osteopathic Med, 2000
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,215 in Illinois → Look up another NPI →
Also registered at 80 Templeton Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian D. Oostman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-108507Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average family medicine physician in 2024
2,095 Medicare Part D claims for 213 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 39 claims were for opioids.
Most prescribed
- Atorvastatin Calcium142 claims
- Metoprolol Succinate115 claims
- Simvastatin107 claims
- Lisinopril105 claims
- Amlodipine Besylate86 claims
- Levothyroxine Sodium79 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Advocate Health And Hospitals CorporationOswego, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian D. Oostman among 6,215 family medicine physician records in Illinois
Brian D. Oostman, DO is one of 6,215 family medicine physician records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2000 · median 2006 among the 3,714 with a school on file
- Record last updated2021 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Oswego
They are 12 of the 516 NPPES records with a practice address in Oswego, and 6,215 family medicine physician records in Illinois.
All 6,215 in Illinois → Every provider in Oswego → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Debarati Bose, MDOswego, IL 605431982823100
- Sharon Christy, M.D.Oswego, IL 605431750736013
- Catherine Chu, M.D.Oswego, IL 605431043586035
- Jennifer Crane, MDOswego, IL 605431689699902
- Alan Haan, M.D.Oswego, IL 605431558798561
- Roy Houlahan, MDOswego, IL 605431720011752
- Shivani Katyal, DOOswego, IL 605431366821811
- Richard Kelly, DOOswego, IL 605431831118264
Common questions
What is Brian D. Oostman, DO's NPI number?
Brian D. Oostman, DO's National Provider Identifier (NPI) is 1316950496, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian D. Oostman, DO located?
The NPPES record lists a practice address at 80 Templeton Dr, Oswego, IL, 60543. Phone: (630) 554-3456. Providers update this record themselves, so call before visiting.
How can I verify Brian D. Oostman, DO's license?
NPPES lists Illinois license number 036-108507, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Brian D. Oostman, DO prescribe under Medicare Part D?
In 2024, Brian D. Oostman, DO had 2,095 Medicare Part D claims for 213 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.